Self-diffusion along step bottoms on Pt(111)

Journal Article · Sun Aug 01 00:00:00 EDT 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.60.4972· OSTI ID:362694

Feibelman, P J ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185-1413 (United States)

First-principles total energies of periodic vicinals are used to estimate barriers for Pt-adatom diffusion along straight and kinked steps on Pt(111), and around a corner where straight steps intersect. In all cases studied, hopping diffusion has a lower barrier than concerted substitution. In conflict with simulations of dendritic Pt island formation on Pt(111), hopping from a corner site to a step whose riser is a (111) microfacet is predicted to be more facile than to one whose riser is a (100). {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 362694
• Journal Information: Physical Review, B: Condensed Matter, Vol. 60, Issue 7; Other Information: PBD: Aug 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PLATINUM
SELF-DIFFUSION
DIFFUSION BARRIERS
ADSORPTION
EPITAXY
SURFACE PROPERTIES